scholarly journals A Critical Analysis of Red Ceramic Blocks Roughness Estimation by 2D and 3D Methods

2021 ◽  
Vol 13 (4) ◽  
pp. 789
Author(s):  
Daiana Cristina Metz Arnold ◽  
Valéria Costa de Oliveira ◽  
Claudio de Souza Kazmierczak ◽  
Leandro Tonietto ◽  
Camila Werner Menegotto ◽  
...  
Keyword(s):  
Critical Analysis ◽  
Extrusion Process ◽  
Mechanical Anisotropy ◽  
Ceramic Substrates ◽  
Ceramic Block ◽  
Average Value ◽  
Ceramic Blocks ◽  
3D Methods ◽  
2D And 3D

The method of measuring the roughness of ceramic substrates is not consensual, with unsuccessful attempts to associate roughness with the adhesion of coatings because the ceramic blocks have different areas of contact, shapes, and dimensions of the roughness as well as the extrusion process influences the mechanical anisotropy of the block. The goal of this work is a quantification and comparison of roughness data obtained by 2D and 3D methods, evaluating the variations of results between the measurement methods and formulating a critical analysis regarding the quality of the information obtained with each method. For this propose, four sets of ceramic blocks with different firing temperature were produced, in order to provide groups of blocks with different surface topographies in which the roughness was estimated. The roughness measurements were made in 4608 regions, resulting in 1536 values using 2D method and 3072 values using 3D method. In the 2D method for ceramic blocks, the measurement orientation strongly influences the result, depending on the measurement position and orientation. The 3D method generates a higher average value and allows to identify roughness variations typical of the ceramic block. The roughness estimation of a ceramic block surface must be done using the 3D method.

Korelasi kreativitas dan motivasi kerja guru terhadap peningkatan mutu pembelajaran

2016 ◽  
Vol 1 (1) ◽  
pp. 51
Author(s):  
Muh Nashiruddin ◽  
Anharurrohman El Muhammadi
Keyword(s):  
Religious Education ◽  
Work Motivation ◽  
Sampling Technique ◽  
Islamic Education ◽  
Learning Improvement ◽  
Average Value ◽  
Teacher Creativity ◽  
Teacher Work ◽  
And Behavior

Penelitian ini bertujuan untuk mengetahui korelasi antara: 1) kreativitas guru PAI terhadap peningkatan mutu pembelajaran Pendidikan Agama dan Budi Pekerti , 2) motivasi kerja guru PAI terhadap peningkatan mutu pembelajaran Pendidikan Agama dan Budi Pekerti , dan 3) kreativitas dan motivasi kerja guru terhadap peningkatan mutu pembelajaran Pendidikan Agama dan Budi. Penelitian ini menggunakan metode deskripsi korelasional dengan melibatkan 33 orang sampel yang dipilih secara dengan metode sensus. Teknik pengumpulan data dilakukan dengan angket/kuesioner. Teknikanalisis data diawali dengan uji prasyarat yaitu uji normalitas dan linieritas. Uji hipotesis menggunakanuji regresi sederhana danuji regresi ganda. Hasil penelitian menunjukkan ; 1) Kreativitas guru berpengaruh terhadap peningkatan mutu pembelajaran Pendidikan Agama Islam dan Budi Pekerti. 2) motivasi kerja guru berpengaruh terhadap peningkatan mutu pembelajaran Pendidikan Agama Islam dan Budi Pekerti. 3) kreativitas guru dan motivasi kerja guru secara bersama-sama atau simultan berpengaruh terhadap mutu pembelajaran. Hasil analisis juga menunjukkan bahwa rata-rata nilai dari ketiga variabel tersebut hanya dapat dimasukkan dalam kategori sedang, sehingga untuk meningkatkan kinerja guru dalam mengajar perlu diperhatikan faktor-faktor lain seperti: gaji, jaminan kerja, jaminan hari tua, penghargaan atas prestasi kerja, dan sebagainya. Kata kunci: kreativitas, motivasi, mutupembelajaran Abstract [The Relationship Between Teachers’ Creativity and Motivation Toward Learning Improvement]. This research aim at determine the correlation between the creativity of teachers on the improvement of learning quality of religious education and behavior, the work motivation of teachers on the improvement of learning quality of religious education and behavior, and the creativity and the work motivation of eachers on the improvement of learning quality of religious education and behavior. This research employed a method of correlation description with 33 Islamic education teacher were selected as sample by means of census sampling. Technique of collecting data employed questionnaire. Technique of data analysis began with prerequisite of normality and linearity. Hypothesis used test of simple regression and double regression.The study revealed that teacher creativity affects on the improvement of learning quality of religious education and behavior, as well as teacher work motivation affects on the improvement of learning quality of religious education and behavior. Futhermore, analysis show that teacher creativity as well as teacher work motivation affects simultaneously on the learning quality of Islamic Education. In conclusion, the average value of those three variables may be only included into medium category. Thus, to increase teacher performance, it needs other factors, such as; salary, job guarantee, pension, appreciation of work achievement, etc. Keywords: Creativity, Motivation, Learning Quality

CRITICAL ANALYSIS OF THE QUALITY OF INTERNET RESOURCES FOR PATIENTS WITH VARICOSE VEINS

2020 ◽  
Author(s):  
Qi Yan ◽  
Alyssa R. Langley ◽  
Katherine J. Jensen ◽  
Christian Goei ◽  
Zheng Jiang ◽  
...  
Keyword(s):  
Critical Analysis ◽  
Varicose Veins ◽  
Internet Resources

The Abdominal Hernia-Q: a critical analysis of the components that impact quality-of-life

Hernia ◽  
2021 ◽  
Author(s):  
G. Onyekaba ◽  
J. T. Mauch ◽  
V. Patel ◽  
R. B. Broach ◽  
S. Thrippleton ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Critical Analysis ◽  
Abdominal Hernia

Quantitative Study on the Effect of Extrusion Process of AZ80 Magnesium Alloy

2010 ◽  
Vol 129-131 ◽  
pp. 1191-1195
Author(s):  
Yan Lou
Keyword(s):  
Set Theory ◽  
Rough Set ◽  
Rough Set Theory ◽  
Extrusion Process ◽  
Average Weight ◽  
Characteristic Parameters ◽  
Billet Temperature ◽  
Az80 Magnesium Alloy ◽  
Ram Speed

By data mining from 3DFEM simulation and Rough Set Theory (RST), it was performed that the extrusion process and die structures effect on the quality of AZ80 magnesium extrudate. The weights of the effect can be obtained. The results show that the effect of the billet temperature on the product quality is dominate, and its average weight is 0.27. The second important parameter is the ram speed and its average weight is 0.22. In addition, it was also found that the effect of the die characteristic parameters on the extrudate is insignificant.

Thin-Film Polycrystalline-Silicon Solar Cells on Ceramic Substrates Made by Aluminum-Induced Crystallization and Thermal CVD

2006 ◽  
Vol 910 ◽  
Author(s):  
Ivan Gordon ◽  
Dries Van Gestel ◽  
Lode Carnel ◽  
Kris Van Nieuwenhuysen ◽  
Guy Beaucarne ◽  
...  
Keyword(s):  
Solar Cells ◽  
Polycrystalline Silicon ◽  
Substrate Roughness ◽  
Ceramic Substrates ◽  
Thermal Cvd ◽  
Si Solar Cells ◽  
Thin Polycrystalline ◽  
Induced Crystallization ◽  
Aluminum Induced Crystallization

AbstractA considerable cost reduction could be achieved in photovoltaics if efficient solar cells could be made from thin polycrystalline-silicon (pc-Si) layers. Aluminum-induced crystallization (AIC) of amorphous silicon followed by epitaxial thickening is an effective way to obtain large-grained pc-Si layers with excellent properties for solar cells. To obtain efficient solar cells, the electronic quality of the pc-Si material obtained by AIC has to be optimized and the cell design has to be adapted to the material. In this paper, we report on pc-Si solar cells made by AIC in combination with thermal CVD on ceramic alumina substrates. We made pc-Si solar cells on alumina substrates that showed Voc values up to 533 mV and efficiencies up to 5.9%. This is the highest efficiency ever achieved with pc-Si solar cells on ceramic substrates where no (re)melting of silicon was used. We demonstrate that the quality of the pc-Si material can be improved drastically by reducing the substrate roughness using spin-on oxides. We further show that a-Si/c-Si heterojunctions lead to much higher Voc values than diffused homojunctions. A cell concept that incorporates spin-on oxides and heterojunction emitters is therefore best suited to obtain efficient pc-Si solar cells on alumina substrates.

The quality of the wood bonding depending on the method of applying the selected thermoplastic biopolymers

2021 ◽  
Vol 116 ◽  
pp. 78-85
Author(s):  
Aneta Gumowska ◽  
Grzegorz Kowaluk
Keyword(s):  
Shear Strength ◽  
Solid Wood ◽  
Average Value ◽  
Wood Bonding ◽  
Research Show

The quality of the wood bonding depending on the method of applying the selected thermoplastic biopolymers. The aim of the research was to determine the effect of the method of applying the biopolymer on the surface of bonding solid wood elements on the quality of the obtained adhesive connection. The results of conducted mechanical research show that the highest average value of shear strength was observed for birch lamellas bonded with PLA, both with the first and second method of application. In case of estimating the quality of the bonding of wooden elements, better results were achieved for PLA and the second method of application the "green" adhesive.

CHANGES IN THE TECHNICAL AND TECHNOLOGICAL LEVEL OF STEAM CULTIVATORS IN THE XXI CENTURY

2021 ◽  
Vol 2 (143) ◽  
pp. 174-183
Author(s):  
Andrey Yu. Nesmiyan ◽  
◽  
Anastasiya S. Kaymakova ◽  
Yuliya S. Tsench ◽  
Keyword(s):  
Weighted Average ◽  
Specific Weight ◽  
Research Purpose ◽  
Utilization Rate ◽  
Average Value ◽  
Technological Level ◽  
Short Test ◽  
Specific Material ◽  
The Cost

Most modern agricultural machines and tools consist of components, the main parameters, design features of which were justified in the first half of the twentieth century. Slowly and evolutionarily, these technical means are developing. (Research purpose) The research purpose is in identifying general trends in the technical and technological level of steam cultivators in the first quarter of the XXI century. (Materials and Methods) For the study there was analyzed the data of the short test reports of the selected machines. The production of steam cultivators in the Russian Federation is gradually increasing. (Results and discussion) For ten years of the beginning of the XXI century, only 27 machines were provided for testing, and from 2014 to 2017 – more than 40, while for "old" cultivators, the weighted average value of the tractor traction class was 2.8, for new ones it is about of four. For the study period (on average 10 years) the quality of soil cultivation in terms of such parameters as deviation from the specified depth of cultivation, crumbling and combing of the field surface has not changed much. The productivity of cultivator units increased by 7-21 percents, which is explained not only by an increase in the power of tractors, but also by an increase in the utilization rate of charge time on average from 0.72 to 0.77. The specific weight of the "new" cultivators was on average 22 kilogram-meters less than that of the "old" analogues, which can be explained by the evolution of their designs. (Conclusions) Increasing the class of tractors by one "level" the specific material consumption of the cultivators aggregated with them increases by about 58 kilogram-meters for both "old" and " new " cultivators. With an increase in the width of the tools from 4 to 16 meters, their weight will increase by 8 times, which affects the cost and operational and environmental characteristics of wide-reach cultivators.

scholarly journals Critical analysis of the drafting of physical therapy randomized controlled trials published in Portuguese

2016 ◽  
Vol 29 (2) ◽  
pp. 421-427
Author(s):  
Ercole da Cruz Rubini ◽  
Fabio Dutra Pereira ◽  
Renato Sobral Monteiro-Junior ◽  
Patricia Zaidan ◽  
Cintia Pereira de Souza ◽  
...  
Keyword(s):  
Physical Therapy ◽  
Randomized Controlled Trials ◽  
Gold Standard ◽  
Critical Analysis ◽  
Physical Therapists ◽  
Controlled Trials ◽  
High Quality ◽  
Randomized Controlled ◽  
Methodological Procedures

Abstract Introduction: randomized controlled trials are high quality studies. Many problems related to the drafting of these studies have been identified and consequently various national and international journals, in an attempt to improve this writing, have adopted the Consolidated Standards of Reporting Trials recommendations. Regarding the studies written specifically by physical therapists, until now, the quality of the drafting in Portuguese has been unknown. Aim: To critically analyze the drafting of RCTs in the area of physical therapy, published in Portuguese, in relation to the CONSORT recommendations. Materials and Methods: On 17th Oct, 2012, 548 RCTs in Portuguese were recovered from the MEDLINE and PEDro databases, which were divided among four evaluators who, after reading the abstracts, selected those related to physical therapy. Of these studies, 78 RCTs were related to physical therapy, which were divided among the four evaluators for the analysis of the drafting according to the CONSORT recommendations. The four evaluators who participated in this study previously obtained a median kappa above 70% when their analyses were compared to the analyses of the evaluator considered the gold standard due to having greater experience. Results: The quantity of items of the CONSORT recommendations according to year of publication was very small, corresponding to a mean of 43% of the items in the articles analyzed. Conclusion: The results make very clear the need to improve the quality of the drafting of the RCTs related to physical therapy in Portuguese and to include more rigorous methodological procedures, such as sample size, randomization and blinding. The dissemination and adoption of the CONSORT recommendations by physical therapy researchers would, without doubt, be a big step towards improving this quality.

scholarly journals Infertilidade Feminina e Conjugalidade: Revisão Integrativa da Literatura

2021 ◽  
Vol 27 (3) ◽  
pp. 279-290
Author(s):  
Suzana Oliveira CAMPOS ◽  
Fabio SCORSOLINI-COMIN
Keyword(s):  
Quality Of Life ◽  
Critical Analysis ◽  
Scientific Literature ◽  
Scientific Production ◽  
Direct Influence ◽  
Common Goal ◽  
Know How ◽  
Sexual Quality Of Life ◽  
International Production

Infertility has repercussions as a problem in different areas. Regarding the sphere of the couple, this is a situation that can affect both spouses and operates in marital satisfaction. Therefore, the objective of the present study was to know how the conjugality is affected by the female infertility from the national and international scientific production. It is an integrative review of the scientific literature indexed in the databases/libraries PUBMED, PsycINFO and LILACS published between 2008 and 2018, in the Portuguese, Spanish and English languages, which recovered 34 publications, which were submitted to critical analysis. It is a predominantly international production, with a quantitative approach. The guiding question that led to the present revision was answered, so that it was found that infertility transforms the conjugal relationship, most often negatively, which has no direct influence of the female factor as cause. In contrast, the search for treatment is shown as an aspect of cohesion between the couple, which strengthens itself in pursuit of a common goal. Therefore, it is necessary to develop actions that aim at improving the marital and sexual quality of life of couples who are undergoing diagnosis and treatment for infertility. Palavras-chave : Infertility; Marriage; Spouses.

scholarly journals On the Issue of the Substitution of Concepts in Determining the Subjects of the Political System of Society (Based on a Critical Analysis of Modern Legal Literature on the Theory of State and Law)

2020 ◽  
Vol 7 (3) ◽  
pp. 228-236
Author(s):  
Vladimir Valentinovich Kozhevnikov
Keyword(s):  
Critical Analysis ◽  
Political System ◽  
The Political ◽  
Scientific Article ◽  
Political Organizations ◽  
Political Aspect ◽  
Educational Literature ◽  
Legal Literature ◽  
Logical Error

This scientific article is devoted to some theoretical problems of the theory of the political system of society. The purpose of the article is to show the true, objective position in relation to the subjects of the political system. To solve this goal, the following tasks were set: a critical analysis of the opinions of those authors who consider as such: 1) criminal communities; 2) public organizations with an insignificant political aspect. Moreover, both in the first and in the second case, it has been proven that scientists are engaged in the substitution of concepts, that is, they commit a logical error. Result: 1) criminal associations are not subjects of the political system of society; 2) according to the political criterion, it is necessary to distinguish only proper political and not proper political organizations; 3) general theoretical provisions, opposite to those stated, differing in illogicality, do not contribute to improving the quality of educational literature on the theory of state and law.

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